feat: 添加新 VIP 图片模型并优化模型选择器

- 新增 gemini-3-pro-image-preview-vip 系列模型（含 2k、4k 版本）
- 实现分组模型选择器，分为推荐和更多两组
- 更新默认图片模型为 gemini-3-pro-image-preview-vip
- 为所有模型添加别名显示（如 nano-banana-2-vip）
- 图片生成请求添加 "Generate an image:" 前缀强调出图

packages/drawnix/src/components/settings-dialog/settings-dialog.tsx

@@ -7,13 +7,39 @@ import { geminiSettings } from '../../utils/settings-manager';
 import { Tooltip, Select } from 'tdesign-react';
 import { InfoCircleIcon } from 'tdesign-icons-react';
 
-export const IMAGE_MODEL_OPTIONS = [
+// VIP models - shown at top
+export const IMAGE_MODEL_VIP_OPTIONS = [
+  { label: 'gemini-3-pro-image-preview-vip (nano-banana-2-vip)', value: 'gemini-3-pro-image-preview-vip' },
+  { label: 'gemini-3-pro-image-preview-2k-vip (nano-banana-2-2k-vip)', value: 'gemini-3-pro-image-preview-2k-vip' },
+  { label: 'gemini-3-pro-image-preview-4k-vip (nano-banana-2-4k-vip)', value: 'gemini-3-pro-image-preview-4k-vip' },
+  { label: 'gemini-2.5-flash-image-vip (nano-banana-vip)', value: 'gemini-2.5-flash-image-vip' },
+];
+
+// Additional models - shown in "More" section
+export const IMAGE_MODEL_MORE_OPTIONS = [
   { label: 'gemini-3-pro-image-preview (nano-banana-2)', value: 'gemini-3-pro-image-preview' },
+  { label: 'gemini-2.5-flash-image (nano-banana)', value: 'gemini-2.5-flash-image' },
   { label: 'gemini-3-pro-image-preview-hd (nano-banana-2-hd)', value: 'gemini-3-pro-image-preview-hd' },
   { label: 'gemini-3-pro-image-preview-2k (nano-banana-2-2k)', value: 'gemini-3-pro-image-preview-2k' },
   { label: 'gemini-3-pro-image-preview-4k (nano-banana-2-4k)', value: 'gemini-3-pro-image-preview-4k' },
-  { label: 'gemini-2.5-flash-image-vip (nano-banana-vip)', value: 'gemini-2.5-flash-image-vip' },
-  { label: 'gemini-2.5-flash-image (nano-banana)', value: 'gemini-2.5-flash-image' },
+];
+
+// Combined options for backward compatibility (flat list)
+export const IMAGE_MODEL_OPTIONS = [
+  ...IMAGE_MODEL_VIP_OPTIONS,
+  ...IMAGE_MODEL_MORE_OPTIONS,
+];
+
+// Grouped options for Select with "More" section
+export const IMAGE_MODEL_GROUPED_OPTIONS = [
+  {
+    group: '推荐',
+    children: IMAGE_MODEL_VIP_OPTIONS,
+  },
+  {
+    group: '更多',
+    children: IMAGE_MODEL_MORE_OPTIONS,
+  },
 ];
 
 export const VIDEO_MODEL_OPTIONS = [
@@ -44,7 +70,7 @@ export const SettingsDialog = ({
       const config = geminiSettings.get();
       setApiKey(config.apiKey || '');
       setBaseUrl(config.baseUrl || 'https://api.tu-zi.com/v1');
-      setImageModelName(config.imageModelName || 'gemini-2.5-flash-image-vip');
+      setImageModelName(config.imageModelName || 'gemini-3-pro-image-preview-vip');
       setVideoModelName(config.videoModelName || 'veo3');
     }
   }, [appState.openSettings]);
@@ -54,7 +80,7 @@ export const SettingsDialog = ({
     geminiSettings.update({
       apiKey: apiKey.trim(),
       baseUrl: baseUrl.trim() || 'https://api.tu-zi.com/v1',
-      imageModelName: imageModelName.trim() || 'gemini-2.5-flash-image-vip',
+      imageModelName: imageModelName.trim() || 'gemini-3-pro-image-preview-vip',
       videoModelName: videoModelName.trim() || 'veo3',
     });
 
@@ -120,10 +146,10 @@ export const SettingsDialog = ({
               className="settings-dialog__select"
               value={imageModelName}
               onChange={(value) => setImageModelName(value as string)}
-              options={IMAGE_MODEL_OPTIONS}
+              options={IMAGE_MODEL_GROUPED_OPTIONS}
               filterable
               creatable
-              placeholder="gemini-2.5-flash-image"
+              placeholder="gemini-3-pro-image-preview-vip"
             />
           </div>
           <div className="settings-dialog__field">

packages/drawnix/src/components/ttd-dialog/ai-image-generation.tsx

@@ -7,7 +7,7 @@ import { useTaskQueue } from '../../hooks/useTaskQueue';
 import { TaskType } from '../../types/task.types';
 import { MessagePlugin, Select } from 'tdesign-react';
 import { useGenerationHistory } from '../../hooks/useGenerationHistory';
-import { IMAGE_MODEL_OPTIONS } from '../settings-dialog/settings-dialog';
+import { IMAGE_MODEL_GROUPED_OPTIONS } from '../settings-dialog/settings-dialog';
 import {
   useGenerationState,
   useKeyboardShortcuts,
@@ -225,7 +225,7 @@ const AIImageGeneration = ({
 
         // Get current image model from settings
         const settings = geminiSettings.get();
-        const currentImageModel = settings.imageModelName || 'gemini-2.5-flash-image-vip';
+        const currentImageModel = settings.imageModelName || 'gemini-3-pro-image-preview-vip';
 
         for (let i = 0; i < count; i++) {
           const taskParams = {
@@ -363,7 +363,7 @@ const AIImageGeneration = ({
               <Select
                 value={selectedModel}
                 onChange={(value) => onModelChange(value as string)}
-                options={IMAGE_MODEL_OPTIONS}
+                options={IMAGE_MODEL_GROUPED_OPTIONS}
                 size="small"
                 placeholder={language === 'zh' ? '选择图片模型' : 'Select Image Model'}
                 filterable

packages/drawnix/src/components/ttd-dialog/ttd-dialog.tsx

@@ -32,7 +32,7 @@ const TTDDialogComponent = ({ container }: { container: HTMLElement | null }) =>
   // 加载当前模型设置
   useEffect(() => {
     const config = geminiSettings.get();
-    setSelectedImageModel(config.imageModelName || 'gemini-2.5-flash-image-vip');
+    setSelectedImageModel(config.imageModelName || 'gemini-3-pro-image-preview-vip');
     setSelectedVideoModel(config.videoModelName || 'veo3');
   }, []);
 

packages/drawnix/src/utils/gemini-api/apiCalls.ts

@@ -15,7 +15,7 @@ export async function callApiRaw(
   messages: GeminiMessage[],
 ): Promise<GeminiResponse> {
   const startTime = Date.now();
-  const model = config.modelName || 'gemini-2.5-flash-image-vip';
+  const model = config.modelName || 'gemini-3-pro-image-preview-vip';
   const endpoint = '/chat/completions';
 
   // Track API call start
@@ -119,7 +119,7 @@ export async function callApiStreamRaw(
   signal?: AbortSignal
 ): Promise<GeminiResponse> {
   const startTime = Date.now();
-  const model = config.modelName || 'gemini-2.5-flash-image-vip';
+  const model = config.modelName || 'gemini-3-pro-image-preview-vip';
   const endpoint = '/chat/completions';
 
   // Track API call start
@@ -472,7 +472,7 @@ export async function callApiWithRetry(
 ): Promise<GeminiResponse> {
   const maxRetries = config.maxRetries || DEFAULT_CONFIG.maxRetries!;
   const retryDelay = config.retryDelay || DEFAULT_CONFIG.retryDelay!;
-  const model = config.modelName || 'gemini-2.5-flash-image-vip';
+  const model = config.modelName || 'gemini-3-pro-image-preview-vip';
   const endpoint = '/chat/completions';
 
   for (let attempt = 0; attempt < maxRetries; attempt++) {

packages/drawnix/src/utils/gemini-api/config.ts

@@ -6,7 +6,7 @@ import { GeminiConfig } from './types';
 
 // 默认配置
 export const DEFAULT_CONFIG: Partial<GeminiConfig> = {
-  modelName: 'gemini-2.5-flash-image-vip', // 图片生成和聊天的默认模型
+  modelName: 'gemini-3-pro-image-preview-vip', // 图片生成和聊天的默认模型
   maxRetries: 10,
   retryDelay: 0,
   timeout: 10 * 60 * 1000, // 10分钟，HTTP 请求超时

packages/drawnix/src/utils/gemini-api/services.ts

@@ -39,10 +39,11 @@ export async function generateImageWithGemini(
     'Content-Type': 'application/json',
   };
 
-  // 构建请求体
+  // 构建请求体 - 强调生成图片
+  const enhancedPrompt = `Generate an image: ${prompt}`;
   const data: any = {
-    model: validatedConfig.modelName || 'gemini-2.5-flash-image-vip',
-    prompt,
+    model: validatedConfig.modelName || 'gemini-3-pro-image-preview-vip',
+    prompt: enhancedPrompt,
     response_format: options.response_format || 'url', // 默认返回 url
   };
 

packages/drawnix/src/utils/settings-manager.ts

@@ -30,7 +30,7 @@ const DEFAULT_SETTINGS: AppSettings = {
     apiKey: '',
     baseUrl: 'https://api.tu-zi.com/v1',
     chatModel: 'gpt-5',
-    imageModelName: 'gemini-2.5-flash-image-vip',
+    imageModelName: 'gemini-3-pro-image-preview-vip',
     videoModelName: 'veo3',
   },
 };